Explosive-engine.



ASSIGNOR T0 BALL & BALL CARBURETOR A CORPORATION OF MICHIGAN.

EXPLOSIVE-ENGINE.

Specification of Letters Patent.

Patented Mar. 4, 1919.

Application led March 27, 1917. Serial No. 157,805.

To @ZZ 1J/wm t may concern.' i

Be it known that I, FREDERICK O. BALL, a citizen of the United States, residin at Detroit, in the county of Wayne and tate of Michigan, have invented new and useful I mproif'ements in Explosive-Engines, of which the following is a specification.

This invention relates to explosive engines and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

The object of the invention is to reduce the resistance to the passage of gases to or from the engine. A common construction of explosive engine has a port leading laterder the valve,

ally from the cylinder with a valve passage leading from this port, the valve controlling the movement of the gases. It has been common to put this valve practically on the plane of one of the walls, ordinarily the bottom wall of the port so that when the valve' is lifted it has been in the path 0f the gases passing through the port. With such a construction part of the gases ordinarily pass over the valve and a part directly unthose passing over the valve in their return movement under the valve having a direction almost directly opposedto the direction of the gases passing along the bottom walls of the port to the valve. The result is a very pronounced obstruction or retardation in the flow of gases, thus .requiring a larger valve for the same capacity. In the present invention this difficulty is largely ohviated. I The invention is illustrated in the accompanying rlrawings as follows Figure 1 shows a central section of an explosive engine.

Fig. 2 a section on the line 2-2 in Fig. 1. l marks the engine cylinder, 2 the piston therein, 3 the cylinder head, 4 a port formed in the cylinder head and lcadinglaterally from the cylinder, 5 a passage leading to theport, this passage being of-set from the cylinder hut formed with the cylinder, 6 a valve seat surrounding the passage 5, and 7 a valve operating on the seat 6. A stein 8 extends from the valve and the valve is actuated through the stem through the usual cam 9.

The seat 6 is formed in a depression 10, thus carrying the seat below the lower wall of the port 4. When the valve is lifted, the gases Vare deflected by reason of the depression 10 so that they enter the passage 10 by easy turns and without portions of the flow directly opposed to other portions of the How of gases. It will be observed that the gases at the side of the valve nearest the cy1- inder are deflected downwardly before they meet the gases passing over the valve and entering the passage 5 at the side of the valve remote from the cylinder. By reason of this construction the4 resistance to the How ofv gases is very materiallyreduced. In order to fully accomplish, this it is desirable to curve the end of the port 4 as shown so that the gases make the turn around the edge of the valve with as little obstruction as possible.

It will be noted that the valve in its upper position has the bottom o f the `valve above the bottom of the' depression and the top of the valve below the top of the depression. In this Way there is a deiiection of ases coming from the engine to the undersi e of the valve and a deflectionof gases passing over the valve into the exhaust port with very little obstruction. By having the top of the valve below the top of the depression there is no tendency for the valve to deflect the gases'passing over the valve upwardly. What I claim as new is 1. In an explosive engine, thev combination a cylinder having a port extending therefrom, said port having a depression in one of the sidewalls thereof; a valve seat arranged in the depression, the port extending beyond said scat in the direction of flow of gases from the cylinder; and a valve operating on the scat, the bottom of the valve when open being above the bottom of the depression and the top of the valve below the top of the depression. y

2. In an explosive engine, the combination of a cylinder having a port extending therefrom, said port having a depression in one of the side walls thereof; a valve seat arranged in the depression, the port extendabove the bottom of the depression but being beyond said seat in the direction ofow low the top of the depresslon and the deof gases from the cylinder and having a.' pression being` of a greater depth than the 10 rounded end adapted to direct the ow yof normal lift of the valve. gases to said depression and toward said In testimony whereof I have hereunto set seat; and a valve operating on the seat, my hand.

the bottom of the valve when open being FREDERICK O. BALL. 

